Dane Hartman. Family Skeletons (1982) (Dirty Harry #5) 175 pp. [pbo]
Publishers description: Dirty Harry Callahan stalks a mass murderer through Bostons infamous underworld where crooked cops are usually looking the other way. Once it was the Boston Strangler—now the killers got a knife and is carving up college girls. Dirty Harry will slice through the slime to find him.
Setting: Boston (Mass.)